Folding box



` Dec. 1, 1925. 1,563,907

' $.KOFF

FOLDING BOX Dec. l, 1925 1563;.907

- s. Kor-'F FOLDING. BOX

Filed Feb. 11, 1925 2 Sheets-Sheet 2 Yso Patented Dec. '1, 1925.

UNITED STATESI SAMUEL KOFF, 0F BROOKLYN, NEW YORK.

FOLDING BOX.

Application mea February 11, 1925. serial No. 8,455.

To all whom 'it may concern:

Be it known that I, SAMUEL Korn, a citizen of United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvemeents in Folding Boxes, of which the following is a specification, reference being had therein to the accompanyin drawing The present invention relates tov folding paper or card-board boxes, and aims to provide a folding box of novel construction having -double thicknesses at the corners between the walls and also having fold lines enabling the box to be readily and compactly folded.

Another object of the invention is the provision of a folding box having simple and inexpensive means for holding the box in shape when unfolded, so as to prevent the box collapsing or folding by itself, and enabling the opened or unfolded box to be conveniently handled and filled.

Another object of the invention is the pro? vision of a folding box having flaps to overlie the kcontents of the box and adapted to be folded with the box into flat form.

With the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in lthe construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawings, wherein-' Figure 1 is a perspective view of the box in open or unfolded position, a portion being broken away.

Fig. 2 is a planview of the box partially folded.

Fig. 3 is a lan view of the box when completely folded. l

Fig. 4 is a plan view of the blank from which the box is made.

Fig. 5 is a perspective view of the box having closure Haps.

Fig. 6 is a cross section of the box shown in Fig. 5 with the Haps in closed position.

Fig. 7 is a plan view showing the box folded, portions being broken away. i

Fig. 8 is a perspective view of another form of box with closure flaps, portions being broken away.

without cut-outs or waste of material, oc-

cup'y the corner portions of tween the end and side walls, the only slitting of the blank being from the four corners of the blank to the corners of the bottom 14. There are fold lines 20 between the bottom and side walls; fold lines 21 between the bottom and end walls, and fold lines 22 between the walls and flaps. In addition,

the blank bethe end walls 16 have diagonal fold'lines 23 v extending from the corners ofthe bottom to the upper edge ofthe end walls. Said fold lines 20, 21, 22 and 23 are all provided in the blank, before completing the box, by scoring or creasing the blank to facilitate bending of the material along the fold lines.

The side and end walls are bent upwardly, and the flaps 17 are bent at an angle to the walls to whichthey are attached. The iiaps 18 overlap the side walls 15 at the inner surfaces thereof, whilc the liaps 17 overlap the end walls at the outer surfaces thereof, said flaps being secured to the walls by means of staples 19 or other securing elements. The box thus has double thicknesses at the corners between the walls, strength.

The diagonal or hypotenuse edges of the flaps 17 coincide with the fold lines 23 of the end walls, in order that the box may be conveniently folded into flat form. Thus, as seen in Figs. 2 and 3, the box is folded by swinging the end walls 16 outwardly and the side walls 15 inwardly, the end walls 16 folding on the lines 23. When the blank for purpose of is folded, the side walls 15 bear on the bot,

tom 14, with the middle portions of the end walls 16 in the same plane as the bottom, and the flaps 17 and corresponding portions of the end walls are folded flatwith the side walls. This enables the folded boxes to be stacked conveniently and compactly.

By having the fold lines 23 coincidingv with the corresponding edges of the fiaps 17,

`.are'employed. Said strips are of pliable,

box to collapse or fold when it is opened, `due to the presence of the fold lines 23,

strips 24 or other suitable' bendable means metal or material which may be readily bent by hand, and which will retain its shape against the tendency ofpthe box to spring o ut of shape. These vstrips 24 are readily positioned between the side and end walls and the aps 18 and 17, -irespectively, when preparing the box for fstapling, and when the staples 19 or othersecuring means are ap lied, said strips will" be held firmly in and permanently secured to the double corner portions of the box, with said strips extending across the folds or bends 22. Such strips are concealed, so as to be out of sight, and it is only necessary to use one of the strips at each end of the box. When folding the box, said strips 24 will be flattened out, and being bent straight will have a tendency to hold the box in its folded position. When the box is unfolded, the end walls 16 being swung upwardly, and preferably moved slightly between the side walls, will bend the strips 24 at right angles, and this will support the end walls 16 in upright posi-` tions. The box is therefore retained or maintained in'open position, when unfolded, so that it may be conveniently handled and lled, without the liability ofthe box colla sing or folding.

igs. 5, 6 and 7 show a box of similar construction, with theside walls 15 provided with flaps 25 at their upper edges to swing inwardly over the contents of the box when it is filled, and said flaps 25A may be of suiiicient Width to overlap one another as seen in Fig. 6. The flaps 25 have props 26 at their ends to be disposed at the inner surfaces of the end walls 16, and to seat on the bottom 14, in order to prevent the flaps 25 from being pressed down. This is particularly desirable when a cover is used to fit over the box, as disclosed in my copending application Serial No. 627,346, filed March 24, 1923.

A modification is shown in that the bendable strips 24' are positioned on the outer surfaces of the end walls 16 with their terminals secured behind the fiaps 17, said strips extending across the fold lines 23. The vstrips 24' are bent, as seen in Fig. 7, when the box is folded, and are straightened out when the box is unfolded` or opened, in order to hold the end walls flat and thereby prevent the box from collapsing. The strips are secured between the double layers or thicknesses of the box, and extend acrossv the fold lines, but the strips are `exposed between the flaps 17 at the ends of the box, which may not be so desirable -as to have the-strips completely concealed at shown in Figs. 1, 2 and 3. However, the stri s may extend across different fold 4lines of t e box, and may be in different positions or locations.

Figs. 8 and 9 illustrateI a box composed of the bottom 14', side walls 15', and end walls 16', with the walls secured together in the same manner as hereinbefore described, and the end walls provided with the fold lines 23 to enable the box to be folded in the same manner. The strips 24" are shown as being confined within the double corner portions of the box. The side walls 15' have the flaps 25 with the props 26' to seat on the bottom of the box behind the end walls i 16', and said end walls have flaps 27 to overfolded, the flaps 25' overlap one another,

and the props 26' may be flat with the flaps 25' so as to be disposed over the end walls.

Having thus described the invention, what is claimed as new is 1. A box comprising a bottom, and walls having fold lines to permit the bottom and walls to be folded together, and concealed bendable means permanently secured to the box across a fold line thereof to be bent when the walls are swung relatively to the bottom and composed of material tending to hold its shape in order to hold the box open when unfolded.` 4

2. A box comprising a bottom, and walls having fold lines to permit the botto-m and walls to be folded together, and concealed bendable strips permanently secured to the box and extending across usome of the fold lines to be bent when the walls are swung relatively to the bottom and composed of material tending to maintain its shape so as to hold the box open when unfolded.

3. A box comprising a bottom, and walls having double thickness portions and fold lines to permit the bottom and walls to be folded together, and bendable means secured within said double thickness portions and extending across some of the feld lines to be bent when the walls are swung relatively to the bottom and composed of material tending to maintain its shape for holding the box open when unfolded.

4. A box comprising a bottom, and walls having double thickness portions and fold lines to permit the bottom and walls to be folded together, and bend'able metal strips and extending across some of the fold lines to be bent when the walls are swung relativel)7 to the bottom and tendiner lto maintain their shape in .order to hod the box open when unfolded.

5. A box comprising a bottom and Walls, said walls having double thickness corner portions, and having fold lines to permit,-

the bottom and walls to fold together, and bendable means secured in said double thickness portions and extending across some of the fold lines to be'bent when the walls are swun relativelyv tothe bottom and compose of materlal tending to maintain its shape for hoding the box open when unfolded.

6. A. box vcomprising a bottom, and walls havin `fiaps secured to the adjacent walls to provi e double thickness corner portions, there being fold lines between the bottom and walls and other fold lines between the walls,

some of the walls having fold lines to permit the bottom and walls to be folded together, and bendable metal strips secured between soutif of, the walls and said flaps and exten in the bottom and tending to maintain t eil` shape in order to hold the box open when unfolded. l

In testimony whereofI hereunto affix my across some of the fold 'lines to be p bent w en the walls are swung relative-1 to 

